Question about Compaq Presario M2000 Notebook

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Display monitor computer powers up but get no display except slight shadow in back of screen. however if you jack to another monitor you get display

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  • starays001 Jul 01, 2008

    when i turn on my laptop..certain bands of line appears on my lcd..but when i switch to an xternal monitor it works fine! what could be the reason?

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  • 159 Answers

You may need a inverter
go to ebay
type m2000 lcd inverter should cost $max 20
i have it here but maybe too far
jamaica
thats the solution to your display problem however at most the bulb in the lcd maybe broken or shot. this does not happen often
so check the inverter first as this is the usual solution 98 percent of the time.
to replace it you remove the screws that are on the bezel that is the front of the display sometimes four max 6
gently lift the front bezel of the inverter is the electronical looking thing to the bottom of your screen

Posted on Jun 07, 2008

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Toshiba m35x starts /stops intermittently with no power to display monitor


By whom Kathleen? You?

I ask because there are two ways to answer this;

1) You performed the procedure, and less for me to post.

2) You did not perform the procedure, and I need to explain from the beginning; using a diagnostic flowchart, pictorial guidance, and guidance from me.

While I wait for your reply, suggest perform this simple test first;
Laptop OFF, monitor OFF, attach an external monitor;

1) VGA monitor to RGB (VGA) port on left side of laptop.
Can use a CRT type of monitor (Looks like a small TV), or flat LCD screen monitor if it has a VGA cable.

http://en.wikipedia.org/wiki/VGA_Connector

OR;

2) S-Video port on left side of laptop for TV, or external video display device

http://en.wikipedia.org/wiki/S-Video

Turn the monitor on. If a CRT type allow it to warm up.
Turn the laptop on.

By factory default settings, the display should show on the external monitor. (Display device)

If not there are 3 display options available;
1) Internal monitor of laptop ONLY
2) Internal monitor of laptop AND external monitor
3) External monitor ONLY

Press, and hold the Fn key down, and at the SAME time tap once on the F5 key.
The F5 key is the Display Toggle-Over key.

Still no?
Hold the Fn key down again, and tap once more on the F5 key.

Display on external monitor means there is a problem with;

A) Video Cable
B) screen Inverter
C) LCD screen

Which means if computer display was working correctly before;

1) Whoever repaired it could have used the external display option, and it needs to be set back to internal

2) The Video Cable connections are not tight, not correct.

Loose at motherboard, screen Inverter, or LCD screen.

3) Anti-Static Procedures were NOT followed, and laptop is now an expensive paperweight.

Post back in a Comment.

Regards,
joecoolvette

Apr 05, 2013 | Toshiba PC Laptops

1 Answer

Dropped my laptop now 1 half of my screen is white and the other half is fine


Hardware damage

1) Laptop OFF, monitor OFF, connect a VGA monitor to the VGA port on the netbook.
The VGA port is on the Left Rear side.

This is an example of a VGA Cable, and VGA connector,

http://en.wikipedia.org/wiki/VGA_connector

Scroll down a little for the VGA Cable example.
NOTE* Color does Not matter. Usually it is Blue. Can be Black or White in color.

You can use a CRT type of monitor, (Looks like a small TV), or a flat LCD screen monitor if it has a VGA cable.

2) Turn the monitor on. If a CRT type of monitor allow it to warm up.
Turn the laptop on.
By factory default the display should show on the external monitor.

However there are at LEAST 3 display options available;

A) Internal monitor of laptop ONLY
B) Internal monitor of laptop AND external VGA monitor
C) External VGA monitor ONLY

Press, and hold down on the Fn key, (Bottom left corner of Keyboard), and at the SAME time tap once on the F4 key.
(The F4 key is the Display Toggle-Over key)

No display on external VGA monitor?
Hold the Fn key down again, and tap once more on the F4 key.

Display good on the external monitor? Fine. Your graphics chipset is good. Problem lays within the Display Assembly, (LCD screen, Display Cover, etc), or the Video Cable.

Also posted in case you do not repair the netbook, or repair is set for a later date. This way you can at least use the netbook at home.

Remove ALL power. Remove the AC adapter (Charger), and Battery.

Video Cable:
The video cable attaches to the motherboard, in the upper left area near the left Hinge.
It then leads under the left Hinge, and up into the Display Assembly.

(LCD screen/ Display Cover, Display Bezel, etc. is the Display Assembly)

From there it connects to the back of the LCD screen.
(The Mini 110-3135dx has LED backlighting, and does not use a screen Inverter )

Just due to normal opening, and closing of the laptop, the Display Panel Cable, (HP for Video Cable), can be pulled on.

This means the connection of the Display Panel Cable, at the motherboard side could have been pulled loose, or at the LCD screen side.

It can also damage the tiny wires inside the Display Panel Cable.

From your description, it sounds like the Display Assembly was open, when it landed.
Display Panel Cable connections should be PHYSICALLY, plugged in to ensure the connections are tight.

A visual examination will NOT do.
Connection on the motherboard side AND -> LCD screen side.

If there is visual signs of damage to the Display Panel cable's sheath, also suspect damage to the tiny wires inside the Display Panel Cable. (Stretched/Broken)

Check the connections first. You can leave the laptop partially disassembled, and check, before putting it back together.

If physically checking, by trying to plug the two connections of the cable in, does no good, you have to suspect if the Display Panel Cable may be damaged.

A continuity check with a multimeter set to OHMs, and checking each wire in the cable, is the next step of the diagnosis.
You can take the cable down to the nearest 'Mom and Pop' computer store, and have the tech check it for a few dollars.

Or due to the price of a replacement you may just wish to replace, and see if that was the problem.

The HP part number is HP 607755-001.

HOWEVER, this is supposed to be for a kit that contains 3 cables.
1) LCD Cable (Display Panel Cable)
2) Webcam Cable
3) Power Cable.

[ Power Cable:
The DC Power Jack is the jack on the laptop, that you plug the AC adapter ( Charger ), into.
The DC Power Jack is NOT soldered to the motherboard, with this model.

Instead it is soldered to a cable of wires, and the wires end in a plug.
The plug is unplugged from the motherboard, and the entire assembly is replaced as a unit. (It's a Power Jack Harness, really)

DC Power Jacks get broken. This one will be easy to replace ]

http://www.aliexpress.com/store/product/LCD-video-Cable-for-HP-Mini-110-110-1000-110-1100-Laptop-LCD-Cable-6017B0207601-6017B0232102/908032_556440323.html

Check the part number on your Display Panel Cable, and see if it matches up to the one you are going to buy, is the best method however.

Display Panel Cable checks out OK, or you have replaced it, and it doesn't solve the problem, the problem is the LCD screen.

Again, in my searching of the LCD screen replacements, I found they all use LED lighting for your model. (Mini 110-3135dx)
LED backlighting as a rule now, does Not use a screen Inverter.

Could I be wrong, and your laptop does indeed have a screen Inverter?
Only you will know once you open the Display Assembly, and check the Display Panel Cable connection at the back of the LCD screen.

If a screen Inverter is used it will be in the Display Assembly.
A screen Inverter could easily have been damaged in a fall, and a bad screen Inverter COULD show the results you stated.
I say -> COULD.

I believe the Display Panel Cable connection may be loose at the motherboard side, and/or LCD screen side, or it may be damaged.
If not I believe the LCD screen is the problem.

To check the Display Panel Cable on the motherboard side, for this model, you have to remove the Top Cover. (HP for Palm Rest Cover)
This means the Static sensitive hardware components for the laptop, will be exposed.

This means you NEED to wear an ESD wrist strap, once the Top Cover is removed.
BEST method however is to just put it on BEFORE starting to disassemble. This way you do not forget, and have a Static shocked laptop, that is only going to be good enough for a DOORSTOP.

One example,

http://www.radioshack.com/product/index.jsp?productId=2103245

The alligator clip needs to be connected to a good ground source.
I connect to an unpainted surface, of the metal frame of an open, empty desktop computer case.

You can also set a large metal serving tray (Unpainted), on the table you're working on, and connect to it.
Or a large metal knickknack. (Unpainted)

Pictorial guide that may help. Allows you to see someone working on an HP Mini,

http://www.insidemylaptop.com/replace-keyboard-in-hp-mini-1033cl-notebook/

Service Manual from HP Support (Free),

http://h10025.www1.hp.com/ewfrf/wc/manualCategory?cc=us&dlc=en&lc=en&product=4307901&


In the list click on -
HP Mini 110 and Compaq Mini CQ10 - Maintenance and Service Guide

[ Note*
On page 65 it shows the Wireless LAN cables.
Number 6 states,
"Disconnect the display panel cable from the motherboard"
It is actually referring to the Figure on the next page. Page 66.
And Number 1 ]


For additional questions please post in a Comment.

Regards,
joecoolvette

Oct 23, 2012 | HEWLETT-PACKARD HP Mini-Notebook...

1 Answer

My nootebook screen does not turn on but bit has power


If it seems like your laptop booted up all the way except the screen is black, Try the steps below.

Shine a flashlight on the dark screen to see if you barely see the icons on the desktop. If so, then the LCD Inverter is bad.

Plug in an external monitor and see if the display shows up on it. It can be any kind of monitor even the old big fat crt monitors as long as it has a vga cable to connect to your computer's vga port. If the external monitor displays your screen that proves your video card is ok. The video will show on most systems when you reboot without you having to do anything. Some systems will require you to hit the FN (Function key) + F1 thru F12. Hold down the FN key then hit the correct key for displaying on the monitor (F1 thru F12). The correct key will normally have CRT/LCD on it or it will have the icon of a display.

If you see no icons by shinning a flash light and the external monitor works, then your screen is bad. If you see no icons by shinning the flash light and nothing shows on the external monitor, then most likely your video card is bad.


If it does not seem like your laptop booted up all the way try the steps below.




When you plug in the power cord is there any lights whatsoever on the laptop, where the plug goes in or on the AC Adapter of the power cord?

When you press the power button do you hear fans running, hard drive spinning, lights on the computer, hear any beeps or lights constantly blinking, hear the DvD/CD drive click and the light on the drawer of the DvD/CD turn on for a second or two? If so the laptop is trying to boot or may have booted, but the screen is not showing for some reason.

Beep tones and blinking lights tells the technicians what is going on with the laptop and why it is not booting. Most times it's a motherboard issue when you hear beeps or blinking lights continuous. Most times the problem is with the memory or Video Card. Count the Blinking Lights or Beeps and take note of their pattern (1 Long or 1 Long followed by 2 Short).

Maybe your power cord is bad if you don't get anything to happen whatsoever when you press the power button. And if that's true maybe you was operating off the battery the last time you had it on and since the power cord is bad, it was not charging the battery so the battery is drained and the power cord is bad.

Maybe you have a Static Charge Buildup. Remove the Power Cord, Remove the Battery, then Press and Hold the power button for 30 seconds. After 30 seconds plug the power cord back in (leave the battery out) and hit the power button to see if it boots. If it does, you can put the battery back in and let it charge.


Maybe your DC Power Jack which is where the power cord plugs into the computer is bad. Take an ink pen and push the tip inside the jack and see if the little pin wiggles, if so the jack is bad. You'll have to take the laptop apart to fix it. Most times it is soldered onto the motherboard, so you will have to desolder the old and solder a new one.


Maybe your memory is bad or the memory slot is bad.

Remove the Power Cord, Remove the battery, Remove the cover that houses the memory on the bottom of the laptop then remove one of the memory chips. Set the chip aside then try rebooting the computer. If it boots, then you know the memory chip you set aside is bad so mark an x on it with an ink pen. If it fails to boot then move the chip to the next memory slot and try rebooting. If it fails take the chip out and set it aside, then put the other chip in and try booting it in both slots. If it boots, just to verify that the chip set aside is bad, mark an x on it and put it into the open memory chip slot and try booting.


May 29, 2012 | Toshiba PC Laptops

1 Answer

Screen won't come on.


Screen won't come on when? When you first hit the power button to boot it up? Does anything ever post to the screen when you hit the Power Button? Or does it seem like it booted up all the way (you hear the fan running, you hear the hard drive spinning) except the screen is black?

If it seems like it booted up all the way except the screen is black try the steps below.

Shine a flashlight on the dark screen to see if you barely see the icons on the desktop. If so, then the LCD Inverter is bad.

Plug in an external monitor and see if the display shows up on it. It can be any kind of monitor even the old big fat crt monitors as long as it has a vga cable to connect to your computer's vga port. If so that proves your video card is ok. The video will show on most systems when you reboot without you having to do anything. Some systems will require you to hit the FN (Function key) + F1 thru F12. Hold down the FN key then hit the correct key for displaying on the monitor (F1 thru F12). The correct key will normally have CRT/LCD on it or it will have the icon of a display.

If you see no icons by shinning a flash light and the external monitor works, then your screen is bad. If you see no icons by shinning the flash light and nothing shows on the external monitor, then most likely your video card is bad.

If it does not seem like it booted up all the way try the steps below:

When you plug in the power cord is there any lights whatsoever on the laptop, where the plug goes in or on the AC Adapter of the power cord?

When you press the power button do you hear fans running, hard drive spinning, lights on the computer, hear any beeps or lights constantly blinking, hear the DvD/CD drive click and the light on the drawer of the DvD/CD turn on for a second or two? If so the laptop is trying to boot or may have booted, but the screen is not showing for some reason.

Beep tones and blinking lights tells the technicians what is going on with the laptop and why it is not booting. Most times it's a motherboard issue when you hear beeps or blinking lights continuous. Most times the problem is with the memory or Video Card. Count the Blinking Lights or Beeps and take note of their pattern (1 Long or 1 Long followed by 2 Short).

Maybe your power cord is bad if you don't get anything to happen whatsoever when you press the power button. And if that's true maybe you was operating off the battery the last time you had it on and since the power cord is bad, it was not charging the battery so the battery is drained and the power cord is bad.

Maybe you have a Static Charge Buildup. Remove the Power Cord, Remove the Battery, then Press and Hold the power button for 30 seconds. After 30 seconds plug the power cord back in (leave the battery out) and hit the power button to see if it boots. If it does, you can put the battery back in and let it charge.


Maybe your DC Power Jack which is where the power cord plugs into the computer is bad. Take an ink pen and push the tip inside the jack and see if the little pin wiggles, if so the jack is bad. You'll have to take the laptop apart to fix it. Most times it is soldered onto the motherboard, so you will have to desolder the old and solder a new one.


Maybe your memory is bad or the memory slot is bad.

Remove the Power Cord, Remove the Battery, Remove the cover that houses the memory on the bottom of the laptop then remove one of the memory chips. Set the chip aside then try rebooting the computer. If it boots, then you know the memory chip you set aside is bad so mark an x on it with an ink pen. If it fails to boot then move the chip to the next memory slot and try rebooting. If it fails take the chip out and set it aside, then put the other chip in and try booting it in both slots. If it boots, just to verify that the chip set aside is bad, mark an x on it and put it into the open memory chip slot and try booting.

May 23, 2012 | Fujitsu PC Laptops

1 Answer

Acer aspire 7000 doesnt start


Maybe it booted except the screen is black. Do you hear fans running, hard drive spinning? Lights?
If it seems like it booted up except the screen is black then try the steps below.


Shine a flashlight on the dark screen to see if you barely see the icons on the desktop. If so, then the LCD Inverter is bad.

Plug in an external monitor and see if the display shows up on it. It can be any kind of monitor even the old big fat crt monitors as long as it has a vga cable to connect to your computer's vga port. If so that proves your video card is ok. The video will show on most systems when you reboot without you having to do anything. Some systems will require you to hit the FN (Function key) + F1 thru F12. Hold down the FN key then hit the correct key for displaying on the monitor (F1 thru F12). The correct key will normally have CRT/LCD on it or it will have the icon of a display.

If you see no icons by shinning a flash light and the external monitor works, then your screen is bad. If you see no icons by shinning the flash light and nothing shows on the external monitor, then most likely your video card is bad.


If it is not booting up then try the steps below:



When you plug in the power cord is there any lights whatsoever on the laptop, where the plug goes in or on the AC Adapter of the power cord?

When you press the power button do you hear fans running, hard drive spinning, lights on the computer, hear any beeps or lights constantly blinking, hear the DvD/CD drive click and the light on the drawer of the DvD/CD turn on for a second or two? If so the laptop is trying to boot or may have booted, but the screen is not showing for some reason.

Beep tones and blinking lights tells the technicians what is going on with the laptop and why it is not booting. Most times it's a motherboard issue when you hear beeps or blinking lights continuous. Most times the problem is with the memory or Video Card. Count the Blinking Lights or Beeps and take note of their pattern (1 Long or 1 Long followed by 2 Short).

Maybe your power cord is bad if you don't get anything to happen whatsoever when you press the power button. And if that's true maybe you was operating off the battery the last time you had it on and since the power cord is bad, it was not charging the battery so the battery is drained and the power cord is bad.

Maybe you have a Static Charge Buildup. Remove the Power Cord, Remove the Battery, then Press and Hold the power button for 30 seconds. After 30 seconds plug the power cord back in (leave the battery out) and hit the power button to see if it boots. If it does, you can put the battery back in and let it charge.


Maybe your DC Power Jack which is where the power cord plugs into the computer is bad. Take an ink pen and push the tip inside the jack and see if the little pin wiggles, if so the jack is bad. You'll have to take the laptop apart to fix it. Most times it is soldered onto the motherboard, so you will have to desolder the old and solder a new one.


Maybe your memory is bad or the memory slot is bad.

Remove the Power Cord, Remove the Battery, Remove the cover that houses the memory on the bottom of the laptop then remove one of the memory chips. Set the chip aside then try rebooting the computer. If it boots, then you know the memory chip you set aside is bad so mark an x on it with an ink pen. If it fails to boot then move the chip to the next memory slot and try rebooting. If it fails take the chip out and set it aside, then put the other chip in and try booting it in both slots. If it boots, just to verify that the chip set aside is bad, mark an x on it and put it into the open memory chip slot and try booting.

May 15, 2012 | Acer PC Laptops

1 Answer

Black screen on neo netbook


Does it boot and it seems like everything is running except the screen is black? If so try this:
Remove the Power Cord, Open the Case and remove one of thememory chips. Set the chip aside then try rebooting the computer. If it boots, then you know the memory chip you set aside is bad so mark an x onit with an ink pen. If it fails to boot then move the chip to the nextmemory slot and try rebooting. If it fails take the chip out and set itaside, then put the other chip in and try booting it in both slots. If itboots, just to verify that the chip set aside is bad, mark an x on it and putit into the open memory chip slot and try booting.

Apr 20, 2012 | PC Laptops

1 Answer

My toshiba satellite m305 s4819 had a colored lines on the screen so I thought it was simple to fix so I open the screen and tried to open the inverter jack but it was small and hard to I used flat screw...


1) The FIRST thing you do when working on a computer, Desktop or Laptop, is to Remove Power.

2) The SECOND thing is to observe Anti-Static Precautions.


You need to disconnect the Video Cable, and the Inverter, FROM the motherboard.

This will ensure that the LCD screen, Backlight, and Inverter are taken out of the system.



You may have shorted across enough with the screwdriver, to just damage the electronic components on the Inverter.

With it connected in the system the computer will not turn on.

But I also want to take the Display Assembly, out of the 'equation' temporarily.

Of course the damage may be more extensive. Diagnose one step at a time.

Laptop off, monitor off; connect a VGA monitor to the VGA connector on the laptop.
Turn the monitor on, allow it to 'warm' up.

Turn the laptop on. If graphics do not automatically show up on the external monitor, press the Fn key, and hold it down, then tap the F5 key.

The F5 key is the toggle-over display key.
You can have;

1) Just the internal monitor of the laptop,
OR,
2) The internal monitor AND the external monitor,
OR,
3) Just the external monitor.

This is why you may have to tap three separate times.

Post your findings back in a Comment.

Regards,
joecoolvette

Sep 24, 2011 | Toshiba PC Laptops

1 Answer

Recently tried to power computer on and computer tries to boot up but screen will only show colored lines. You can see faintly behind lines are icons like computer is trying to turn on. When shut down you...


Hello.

I'm not certain if a power issue or graphics / display issue.

If a power issue, the most common reasons are the battery, power jack and power adapter/cord.

Power off and remove the battery. If the laptop powers on with just the adapter connected, your battery is faulty.

If you move/wiggle the power adapter at the point where it connects to the laptop, and the power goes off and on, the power jack is the problem.

The power jack is inside the laptop and either needs soldering or replacement.

If no change, the power adapter is probably faulty and needs replacement.

If a display / graphics issue, connect an external monitor to your laptop. If an external monitor works, it is the display's backlight or inverter board.

If you were experiencing discoloration in the screen (pinkish lower light hues) before it failed, that would indicate a CCFL backlight issue. If the screen suddenly went dim on you rather than a slow degradation, the inverter would be indicated.

In either case, a technician in your area should be able to help. Evaluate to see if the repair is cost-effective.

It's also possible that your graphics card is faulty and needs to be replaced.

Hope this helps.

Feb 27, 2011 | Compaq PC Laptops

1 Answer

No post and no display


Do you have any indicator light activity at all?

If so, then try hooking up an external monitor.
If it shows display on the screen this would point to video issues (CCFL tube, Inverter, video chip, one or a combination of.)
There is also a key combination to switch between internal display and external monitor. Usually FN key + (little monitor symbol on one of the upper function keys)

If you dont have any indicator light activity then;
Things i would try first.
  1. Check the power adapter for power. (if you have a voltmeter this would be the easiest way) if not, try switching to another outlet
  2. Check your DC power jack to see if there is any freeplay or damage to it. 
  3. If both these check out, then i would unplug dc power adapter from laptop, remove battery, and let the laptop sit for a few minutes. Then hold down the power button for 10-15 seconds. Plug in the DC power jack but dont place the battery back in yet.
  4. Try powering up. if no go, then plug the DC power jack back in and try powering up again. 
If this still doesnt work, and your DC adapter voltage checks good and your DC power jack isnt loose, i would suspect either a charging circuit issue or deeper motherboard related issues. 
Hope this helps

Feb 15, 2010 | Gateway MX6750 PC Notebook

7 Answers

Not working


It could be a variety of things, did you hear the other parts spinning and whirring as before? Then it could be just the screen or video card. Try hooking it up to a regular monitor and see if it will display there. Other problems could be HD failure, but usually your computer would freeze on startup or your BIOS will tell you that instead of a blank screen. Have you tried contacting the manufacturer for tech support on the issue? It is hard to diagnose blank screens over the net due to the lack of information you can get (ie. error messgaes, etc.....)

Sep 09, 2006 | Acer TravelMate 4000 Notebook

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